| Mathbox for Glauco Siliprandi |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > meaiuninc3 | Structured version Visualization version GIF version | ||
| Description: Measures are continuous from below: if 𝐸 is a sequence of nondecreasing measurable sets (with bounded measure) then the measure of the union is the limit of the measures. This is the general case of Proposition 112C (e) of [Fremlin1] p. 16 . This theorem generalizes meaiuninc 46510 and meaiuninc2 46511 where the sequence is required to be bounded. (Contributed by Glauco Siliprandi, 13-Feb-2022.) |
| Ref | Expression |
|---|---|
| meaiuninc3.p | ⊢ Ⅎ𝑛𝜑 |
| meaiuninc3.f | ⊢ Ⅎ𝑛𝐸 |
| meaiuninc3.m | ⊢ (𝜑 → 𝑀 ∈ Meas) |
| meaiuninc3.n | ⊢ (𝜑 → 𝑁 ∈ ℤ) |
| meaiuninc3.z | ⊢ 𝑍 = (ℤ≥‘𝑁) |
| meaiuninc3.e | ⊢ (𝜑 → 𝐸:𝑍⟶dom 𝑀) |
| meaiuninc3.i | ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → (𝐸‘𝑛) ⊆ (𝐸‘(𝑛 + 1))) |
| meaiuninc3.s | ⊢ 𝑆 = (𝑛 ∈ 𝑍 ↦ (𝑀‘(𝐸‘𝑛))) |
| Ref | Expression |
|---|---|
| meaiuninc3 | ⊢ (𝜑 → 𝑆~~>*(𝑀‘∪ 𝑛 ∈ 𝑍 (𝐸‘𝑛))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | meaiuninc3.m | . . 3 ⊢ (𝜑 → 𝑀 ∈ Meas) | |
| 2 | meaiuninc3.n | . . 3 ⊢ (𝜑 → 𝑁 ∈ ℤ) | |
| 3 | meaiuninc3.z | . . 3 ⊢ 𝑍 = (ℤ≥‘𝑁) | |
| 4 | meaiuninc3.e | . . 3 ⊢ (𝜑 → 𝐸:𝑍⟶dom 𝑀) | |
| 5 | meaiuninc3.p | . . . . . 6 ⊢ Ⅎ𝑛𝜑 | |
| 6 | nfv 1914 | . . . . . 6 ⊢ Ⅎ𝑛 𝑘 ∈ 𝑍 | |
| 7 | 5, 6 | nfan 1899 | . . . . 5 ⊢ Ⅎ𝑛(𝜑 ∧ 𝑘 ∈ 𝑍) |
| 8 | meaiuninc3.f | . . . . . . 7 ⊢ Ⅎ𝑛𝐸 | |
| 9 | nfcv 2898 | . . . . . . 7 ⊢ Ⅎ𝑛𝑘 | |
| 10 | 8, 9 | nffv 6886 | . . . . . 6 ⊢ Ⅎ𝑛(𝐸‘𝑘) |
| 11 | nfcv 2898 | . . . . . . 7 ⊢ Ⅎ𝑛(𝑘 + 1) | |
| 12 | 8, 11 | nffv 6886 | . . . . . 6 ⊢ Ⅎ𝑛(𝐸‘(𝑘 + 1)) |
| 13 | 10, 12 | nfss 3951 | . . . . 5 ⊢ Ⅎ𝑛(𝐸‘𝑘) ⊆ (𝐸‘(𝑘 + 1)) |
| 14 | 7, 13 | nfim 1896 | . . . 4 ⊢ Ⅎ𝑛((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐸‘𝑘) ⊆ (𝐸‘(𝑘 + 1))) |
| 15 | eleq1w 2817 | . . . . . 6 ⊢ (𝑛 = 𝑘 → (𝑛 ∈ 𝑍 ↔ 𝑘 ∈ 𝑍)) | |
| 16 | 15 | anbi2d 630 | . . . . 5 ⊢ (𝑛 = 𝑘 → ((𝜑 ∧ 𝑛 ∈ 𝑍) ↔ (𝜑 ∧ 𝑘 ∈ 𝑍))) |
| 17 | fveq2 6876 | . . . . . 6 ⊢ (𝑛 = 𝑘 → (𝐸‘𝑛) = (𝐸‘𝑘)) | |
| 18 | fvoveq1 7428 | . . . . . 6 ⊢ (𝑛 = 𝑘 → (𝐸‘(𝑛 + 1)) = (𝐸‘(𝑘 + 1))) | |
| 19 | 17, 18 | sseq12d 3992 | . . . . 5 ⊢ (𝑛 = 𝑘 → ((𝐸‘𝑛) ⊆ (𝐸‘(𝑛 + 1)) ↔ (𝐸‘𝑘) ⊆ (𝐸‘(𝑘 + 1)))) |
| 20 | 16, 19 | imbi12d 344 | . . . 4 ⊢ (𝑛 = 𝑘 → (((𝜑 ∧ 𝑛 ∈ 𝑍) → (𝐸‘𝑛) ⊆ (𝐸‘(𝑛 + 1))) ↔ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐸‘𝑘) ⊆ (𝐸‘(𝑘 + 1))))) |
| 21 | meaiuninc3.i | . . . 4 ⊢ ((𝜑 ∧ 𝑛 ∈ 𝑍) → (𝐸‘𝑛) ⊆ (𝐸‘(𝑛 + 1))) | |
| 22 | 14, 20, 21 | chvarfv 2240 | . . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝐸‘𝑘) ⊆ (𝐸‘(𝑘 + 1))) |
| 23 | meaiuninc3.s | . . . 4 ⊢ 𝑆 = (𝑛 ∈ 𝑍 ↦ (𝑀‘(𝐸‘𝑛))) | |
| 24 | nfcv 2898 | . . . . . 6 ⊢ Ⅎ𝑘𝑀 | |
| 25 | nfcv 2898 | . . . . . 6 ⊢ Ⅎ𝑘(𝐸‘𝑛) | |
| 26 | 24, 25 | nffv 6886 | . . . . 5 ⊢ Ⅎ𝑘(𝑀‘(𝐸‘𝑛)) |
| 27 | nfcv 2898 | . . . . . 6 ⊢ Ⅎ𝑛𝑀 | |
| 28 | 27, 10 | nffv 6886 | . . . . 5 ⊢ Ⅎ𝑛(𝑀‘(𝐸‘𝑘)) |
| 29 | 2fveq3 6881 | . . . . 5 ⊢ (𝑛 = 𝑘 → (𝑀‘(𝐸‘𝑛)) = (𝑀‘(𝐸‘𝑘))) | |
| 30 | 26, 28, 29 | cbvmpt 5223 | . . . 4 ⊢ (𝑛 ∈ 𝑍 ↦ (𝑀‘(𝐸‘𝑛))) = (𝑘 ∈ 𝑍 ↦ (𝑀‘(𝐸‘𝑘))) |
| 31 | 23, 30 | eqtri 2758 | . . 3 ⊢ 𝑆 = (𝑘 ∈ 𝑍 ↦ (𝑀‘(𝐸‘𝑘))) |
| 32 | 1, 2, 3, 4, 22, 31 | meaiuninc3v 46513 | . 2 ⊢ (𝜑 → 𝑆~~>*(𝑀‘∪ 𝑘 ∈ 𝑍 (𝐸‘𝑘))) |
| 33 | fveq2 6876 | . . . 4 ⊢ (𝑘 = 𝑛 → (𝐸‘𝑘) = (𝐸‘𝑛)) | |
| 34 | 10, 25, 33 | cbviun 5012 | . . 3 ⊢ ∪ 𝑘 ∈ 𝑍 (𝐸‘𝑘) = ∪ 𝑛 ∈ 𝑍 (𝐸‘𝑛) |
| 35 | 34 | fveq2i 6879 | . 2 ⊢ (𝑀‘∪ 𝑘 ∈ 𝑍 (𝐸‘𝑘)) = (𝑀‘∪ 𝑛 ∈ 𝑍 (𝐸‘𝑛)) |
| 36 | 32, 35 | breqtrdi 5160 | 1 ⊢ (𝜑 → 𝑆~~>*(𝑀‘∪ 𝑛 ∈ 𝑍 (𝐸‘𝑛))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1540 Ⅎwnf 1783 ∈ wcel 2108 Ⅎwnfc 2883 ⊆ wss 3926 ∪ ciun 4967 class class class wbr 5119 ↦ cmpt 5201 dom cdm 5654 ⟶wf 6527 ‘cfv 6531 (class class class)co 7405 1c1 11130 + caddc 11132 ℤcz 12588 ℤ≥cuz 12852 ~~>*clsxlim 45847 Meascmea 46478 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2157 ax-12 2177 ax-ext 2707 ax-rep 5249 ax-sep 5266 ax-nul 5276 ax-pow 5335 ax-pr 5402 ax-un 7729 ax-inf2 9655 ax-cnex 11185 ax-resscn 11186 ax-1cn 11187 ax-icn 11188 ax-addcl 11189 ax-addrcl 11190 ax-mulcl 11191 ax-mulrcl 11192 ax-mulcom 11193 ax-addass 11194 ax-mulass 11195 ax-distr 11196 ax-i2m1 11197 ax-1ne0 11198 ax-1rid 11199 ax-rnegex 11200 ax-rrecex 11201 ax-cnre 11202 ax-pre-lttri 11203 ax-pre-lttrn 11204 ax-pre-ltadd 11205 ax-pre-mulgt0 11206 ax-pre-sup 11207 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2065 df-mo 2539 df-eu 2568 df-clab 2714 df-cleq 2727 df-clel 2809 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3061 df-rmo 3359 df-reu 3360 df-rab 3416 df-v 3461 df-sbc 3766 df-csb 3875 df-dif 3929 df-un 3931 df-in 3933 df-ss 3943 df-pss 3946 df-nul 4309 df-if 4501 df-pw 4577 df-sn 4602 df-pr 4604 df-tp 4606 df-op 4608 df-uni 4884 df-int 4923 df-iun 4969 df-disj 5087 df-br 5120 df-opab 5182 df-mpt 5202 df-tr 5230 df-id 5548 df-eprel 5553 df-po 5561 df-so 5562 df-fr 5606 df-se 5607 df-we 5608 df-xp 5660 df-rel 5661 df-cnv 5662 df-co 5663 df-dm 5664 df-rn 5665 df-res 5666 df-ima 5667 df-pred 6290 df-ord 6355 df-on 6356 df-lim 6357 df-suc 6358 df-iota 6484 df-fun 6533 df-fn 6534 df-f 6535 df-f1 6536 df-fo 6537 df-f1o 6538 df-fv 6539 df-isom 6540 df-riota 7362 df-ov 7408 df-oprab 7409 df-mpo 7410 df-om 7862 df-1st 7988 df-2nd 7989 df-frecs 8280 df-wrecs 8311 df-recs 8385 df-rdg 8424 df-1o 8480 df-2o 8481 df-oadd 8484 df-omul 8485 df-er 8719 df-map 8842 df-pm 8843 df-en 8960 df-dom 8961 df-sdom 8962 df-fin 8963 df-fi 9423 df-sup 9454 df-inf 9455 df-oi 9524 df-card 9953 df-acn 9956 df-pnf 11271 df-mnf 11272 df-xr 11273 df-ltxr 11274 df-le 11275 df-sub 11468 df-neg 11469 df-div 11895 df-nn 12241 df-2 12303 df-3 12304 df-4 12305 df-5 12306 df-6 12307 df-7 12308 df-8 12309 df-9 12310 df-n0 12502 df-z 12589 df-dec 12709 df-uz 12853 df-q 12965 df-rp 13009 df-xneg 13128 df-xadd 13129 df-xmul 13130 df-ioo 13366 df-ioc 13367 df-ico 13368 df-icc 13369 df-fz 13525 df-fzo 13672 df-fl 13809 df-seq 14020 df-exp 14080 df-hash 14349 df-cj 15118 df-re 15119 df-im 15120 df-sqrt 15254 df-abs 15255 df-clim 15504 df-rlim 15505 df-sum 15703 df-struct 17166 df-slot 17201 df-ndx 17213 df-base 17229 df-plusg 17284 df-mulr 17285 df-starv 17286 df-tset 17290 df-ple 17291 df-ds 17293 df-unif 17294 df-rest 17436 df-topn 17437 df-topgen 17457 df-ordt 17515 df-ps 18576 df-tsr 18577 df-psmet 21307 df-xmet 21308 df-met 21309 df-bl 21310 df-mopn 21311 df-cnfld 21316 df-top 22832 df-topon 22849 df-topsp 22871 df-bases 22884 df-lm 23167 df-xms 24259 df-ms 24260 df-xlim 45848 df-salg 46338 df-sumge0 46392 df-mea 46479 |
| This theorem is referenced by: (None) |
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